Senior Full-Stack Developer (m/w/d)

Your mission Build the next digital generation of Storage24 Storage24 is the European leader in XXL self-storage and flexible space solutions. After rapid expansion, we are now building a data-driven, scalable digital platform.

We're looking for a Senior Full Stack Developer who thrives with high autonomy, takes ownership without being told twice, and delivers real impact — someone who's built things in a vibrant, fast-moving, ideally startup environment and knows how to figure things out when the path isn't fully mapped out yet.

You'll work closely with Product and business leadership and take end-to-end ownership of key platform initiatives.

You will: - Build and extend platform features & internal tools - Design and optimize data pipelines & integrations - Operate scalable services on Google Cloud - Maintain CI/CD pipelines & deployment environments - Ensure quality through testing and code reviews This is not a ticket role.

It's architecture, ownership, and shipped value — you'll often get direction on the what, not the how, and we expect you to run with that.

Your profile Technical Expertise - 3+ years of experience as a Full Stack Developer (or equivalent hands-on depth — we value real coding experience over titles) - Strong experience with modern TypeScript & React - Confident working with SQL and data modeling - Experience building and operating services in Google Cloud - Familiar with Infrastructure-as-Code and CI/CD workflows - Comfortable designing APIs, integrations, and scalable architectures - Fluent in English (German or French is a plus) Nice to have: HubSpot, n8n, BigQuery, Docker, Tailwind, ETL/data engineering, event-driven systems.

Mindset - You've worked in a dynamic, fast-paced environment — startup experience strongly preferred — and know what it's like when priorities shift daily and nobody hands you a spec - You take senior-level ownership end-to-end, and you don't wait around for instructions to get started - You're comfortable making decis